Improvement in apparatus for the manufacture of sugar



8. 00p. Apparatus for the Manufacture of Sugar..

Patented Feb-4. 1873.

AM PHOTO-LITHOGRAPHIC ca. N.(osaomvsl PRucsss') smarts STATES PATENT. OFFIoE.

SANTIAGO pol), or HAVANA, oIJBA.

IMPROVEMENT IVNWAVPPARATUS FOR THE MANuFAc ruRso SUGAR.

Specificatio'q forming part of Letters Patent No. 135,529, dated February 4, 1873.

To all whom it may concern: where. B is the furnace, the products of con.-

. equivalents.

Be it known that I, SANTIAGO D01), a citizen of the United States,residing at Havana, in the Island of Cuba, have invented an Improvement in the Manufacture of Sugar, of which the following is a specification:

This invention relates to the manufacture of sugar either from the cane or beet-root by the vacuum-pan process. Its object is to subject the juice, preparatory to introducing it to the vacuum-pan and during the earlier stages of its concentration, to a boiling process under pressure in close vessels or boilers made to constitute a steam-generator, thus causing said juice to furnish steam to be used in the sugar-works for clarifying purposes or for driving the pump or pumps and engine employed in place of steam generated from water in the usual way, whereby fuel is largely economized, as also labor, and the removal of impurities from the juice cheapened by reason of the high degree of heat which is obtained to effect coagulation and remove impurities without resorting, or of necessity, to repeated successive stages of concentration or to bone-black or its The improvement consists in a generator composed of a number of connected boilers in combination with a particular arran gement of fines, dividing-wall, and safetycolumn with its connections, whereby a most perfect distribution of the heat is obtained and the steam collected for use, as required, free from foam or scum, which is returned to the boilers. The improvement also consists in a scum-trough arranged within one or more of the boilers, and pipe connecting said trough with the clarifier, for collecting the scum from the surface of the juice in the boilers and conveying it to be recleaned.

In the accompanying drawing, which forms part of this specification, Figure 1 represents a plan of the furnace and generator. Fig. 2 is a vertical sectional elevation of the same.

Similar letters of reference indicate corresponding parts in both figures of the drawmg.

A A A A are close boilers, connected to form a single generator for partly concentrating the juice under pressure by heat applied direct to said boilers, and for generating steam from the juice for use in the clarifiers or elsebustion from which are caused to circulate under and around the boilers A A A A by means of fines b 1) formed in the setting or brick-work of the boilers, and through which the equal distribution of the heat is insured e, by which the juice is fed to said boiler, and

from thence is passed successively by connecting-pipes f from boiler to boiler, and is ultimately discharged, through a cook or valve actuated by a float to maintain any required level, by a pipe, 9, to receivers or sirup-tanks G G, from which the vacuum-pan, for further concentration of the juice, is supplied. The steam, or greater portion of it, thus produced from boiling the juice under pressure, after clarification, is conveyed by pipes h h h h to a column, H, from whence it is conveyed by a pipe, 5, for use, as required, either in working the engine which drives the works and for supplying the clarifier for operating the air and other pumps or for any other use for which it may be needed.

The column H is a safety one for collecting scum or foam rising from the boilers with the steam and for returning the same by a pipe, I, to the first boiler A, or to any of the other boilers, thereby tending to keep the remaining boilers clean.

The first boiler A, as also the other boilers if necessary, is or are provided with a trough, m, for collecting the scum from the surface of the juice and discharging it by a pipe, at, to the clarifier to be recleaned.

By boiling the juice under pressure, as described, not only is fuel economized and other economies obtained by generating steam direct from the juice for use, as specified, but the high degree of heat to which the juice is exposed in this its earlier stage of concentration enables coagulation to be effected and h,.and safety-column H with its pipe 1, suba-liows of impurities to be removed without stantially as herein described;

necessarily resorting to repeated successive 2. The combination of the trough m and disstages of concentration or to the use of bonecharge-pipe n with either or all of the boilers,

black or other purifying substances. essentially as and for the purpose herein set What is here claimed, and desired to be seforth.

cured by Letters Patent, is SANTIAGO DOD.

1. The generator composed of a number of W'itnesses:

connected boilers, in combination with the. FRED. HAYNES,

fiues b, and dividing-Wall c, the steam pipes R. E. RABEAU. 

